Game analysis of Spain-Netherlands in WSL B 2017

31 december 2017

The Netherlands have finished the World Shogi League season well with 7 won matches out of 9 in the B division. We are on the first place currently, but Denmark could still pass us if they win their remaining games.
In the last round we beat Spain with 2-1. Daniel Arús took the lead for Spain by beating Ritchy Höhne.
Ritchy Höhne – Daniel Arus 0-1 17 december 2017

Daniel initiated the fight and in this position he got a strong point in the centre. Ritchy tried to challenge this with P*66, but had to accept a Silver-Knight exchange after N85. There followed Px65 Nx77 Bx77 B73 N*85 Bx84 P64 G53 B86 leading to the following position:

Daniel used his Gold to control the advancing Pawn, while Ritchy protected it with B86. Now Daniel blocked the Rook by dropping a pawn on 66. He then proceeded with taking the Pawn on 64. Ritchy sacrificed his Bishop for the Gold, but Daniel’s attack was quicker.

Wouter de Haas – Jona Ruiz 1-0 27 december 2017
On board 2 there was an exciting battle between Wouter de Haas and our Spanish friend Jona Ruiz. Jona was succesful on the second file, but Wouter shifted the focus to the centre.

In this position the counter attack of Wouter is already quite strong. He showed an interesting concept here by playing B55. Now, he threatens Px73 Gx73 P*74, while the Bishop cannot be taken. so the pressure on the diagonal is very strong. Jona answered S63, and after S*75 Sx54 Px73 Gx73 Bx73+ Kx73 Rx54 the Bishop has been exchanged for two Generals and Jona’s King is very open.
However, he managed to run away.

Wouter had been chasing the King, but now Jona chose the wrong route. I think after K24 it would have been very difficult to catch the King, and Jona would have a good chance for an entering King. However, he went to 12 with his King and this gave Wouter a chance to continue his attack with P*23. After Rx23 +R72 P*22 N15 Rx29+ P*23 Wouter got a very strong pressure on the second rank. In fact this pressure is very similar to the one in the previous position with the Bishop’s diagonal. Also in this position, he kept pressuring with successive Pawn drops, this time on 23. Wouter won a lot of material, and mate followed soon.

So the decisive game was between me and Diego Gonzalez. Note that he has a nice blog about Shogi!
Diego Gonzalez – Twan Burg 0-1 30 december 2017
As usual, I prepared for my opponent, and saw that he was playing Static Rook and often did an early Bishop Exchange, even when he would lose his turn to move. Being very familiar with a type of position can certainly be more important than one move in the opening. However, I made sure that I was ready for this type of position too, and analyzed it a bit with the engine. I saw that the engine would often go for Rapid Advancing Silver in Bishop Exchange. And that the position would be quite playable, even when the opponent goes for Reclining Silver, which is the best countermeasure according to the video of Hidetch. So I decided to analyze it a bit and go for it, I liked also the directness of this variation.


In my preparation I saw that P75 sometimes needs to be prepared by K31 first, to protect the Knight. We will soon see why. However I also saw that in some positions this is not necessary. I felt that his shape was not ideal, with a sitting King, so I decided to go for it.
After P75 Px75 Sx75 P24 Px24 P*25 his idea is that I cannot take on 25 because Rx25 would be a Silver-Knight fork. So I continued my attack with P*76 S88 Sx66 Px24 P*22 and accepted the situation on the second file. This situation is pleasant for him, and later he could drop something on 23 to break through. However I have also been succesful on the other side, and the result of the opening is an advantage for me. A few moves later the tables started to turn and his attack was very unpleasant.

In this position I needed to find a way to deal with his Pawn, while not get into any King-Rook fork. There are no really good ways to do this, so I spent most of my time here. Finally I chose for an early King escape with K31, and after Px53+, my Knight joined with N73. Like this one of the diagonals is closed and I attack his Gold. After B*64 N65 I could take his Gold, while my Knight joins the attack. With +Px43 he won quite a lot of material, but my King is relatively safe and my attack is strong. After P*42 +Px32 Kx32 G69-58 R62 B53+ we reached the following position:

Diego felt that he needed to spend some time on defense, so my Rook could survive. On 62 it is very well placed, attacking the Bishop, being protected by the Gold, and with the 6th file potentially opening up. Here I was already in byo-yomi already, and have a difficult decision to make. Maybe it is good that I didn’t see the opportunity to play G*69, because it looks very exciting! But the King can run after Kx69 N77= K78 R69+ K87. Instead I dropped a pawn on 56, so it could promote when the Bishops is exchanged to the Gold. The situation is however very tricky for my King as well. He can drop something on 23, but my King can run away to 51. After G49-48 I played +B66, a very good square for the Horse. I felt my attack should be stronger here, because the P57+ threat is very strong. We both attacked strongly and a few moves later I was in a threatmate:

It is not really possible to remove the threatemate, so I tried to mate my opponent. I started with Px58+ Rx58 G*48, exchanging the Rook, his last defender. After Rx48 +Bx48 Kx48 there are a few ways to win the Horse on 53 and escape to his threatmate, but it would not be comfortable to let him attack with many pieces with my King still in danger. So I tried to find a mate and find one after N57+. After Kx57 R*67 we again see that the Rook on 62 supports very nicely in the attack. After K56 I had to find the last important move: G*55. Now Kx55 +R65 K44 S*35 Kx34 G*24 resulted in mate by dropping my last piece!

So the Netherlands finished the league in high spirits with 19 wins out of 27 games. In fact The Netherlands is the first and only one to finish all their games in 2017! Hopefully WSL will continued with a few different regulations, possibly with The Netherlands in the highest division!

The standings at the end of 2017

Frequent motives in the Side Pawn Picker B33 varation

Introduction

In this article we are looking at one of the main lines in modern shogi, the Side Pawn Picker variation. While they used to say that ‘taking the side pawn gives seven years of problems’, nowadays players know how to best defend against dangerous counterattacks such as Double Side Pawn Picker and B*4e variation.

Therefore Gote in above position most frequently doesn’t exchange the Bishops rightaway but plays B33, postponing the fireworks. At some point Gote’s Rook will be attacked and it will then retreat to 85, the Chuza variation. This dynamic move brought this opening completely back to fashion a few years ago. Gote then proceeds with building Nakahara’s King, while Sente’s King typically stays in the centre. After that normally the Knights are joining the game and an exciting battle starts!
A typically position after Gote would complete its Nakahara’s King and before the Knights are joining looks like this:

In this article we will look at tactics and ideas that occur frequently in this type of positions.
Note that the position is quite symmetrical, so most of the ideas should be considered by both players in both attack and defence!

The P75 sacrifice and attacks on the knights head

I frequently encounter a Bishop exchange followed by N77. This loses a move and the knight on 77 can become a target.
Zwanzigst-Twaburov 23-12-2017 81dojo


This position is a clear example where I can directly attack the Knight’s head with P75. If Sente takes it with Px75, then after Px76 Rx76 B*54 and P*76 on the next move again Gote can insist on winning the knight. Something similar will happen if Sente leaves it as it is: Px76 Rx76 B*54 etc.

With the Knight on 77, the Pawn sacrifice P75 can also be good without directly winning material.
Juupke-Twaburov 2017 jijbent.nl

Also in this game my opponent exchanged the bishop and pushed back my Rook. Now he dropped the bishop to further harass my Rook. P75 is a very strong pawn sacrifice here.
It opens the 4th rank for the Rook and puts pressure on the 7th file. If Sente takes with the Pawn, the Knight directly falls prey to the pawn after P*76. My opponent took with the Bishop and after R74 the situation on the 7th file is pleasant for me. Few moves later I found a good moment to take the hostage piece and still win the Knight:

I played Rx75 Px75 P*76 after which I gained a material advantage, and by attacking with my Knights I could soon seize the initiative.

When after the Bishop Exchange Sente carefully builds his position, he could try to harass Gote’s Knight on the other site.
Bjerke-Burg ESC 2016


My opponent played very well so far and now has the serious threat P*24 Sx24 P*34. This shows it is difficult to defend the Knight’s head! I was forced to open the 4th rank with the P75 sacrifice and to play actively for counterplay after that.

A bottom Pawn is solid as a rock

As Gote’s 3rd file pawn was eaten by the Side Pawn Picker, it can be dropped on 31. This can be useful when Sente manages to break through on the 2nd file.

Kambuy – Twaburov WSL 2017


In this position my opponent decided to sacrifice his Bishop to promote the Rook and take my Lance. However, after Bx33 Sx33 R21+ I can drop a bottom Pawn with P*31. After Rx11 Px75 I also went on to win the Knight. Note that in this opening a Bishop is a very powerful piece, as it can simultaneously control all the 4 corners! A lot of forks are possible. Therefore the Bishop sacrifice was not a success.

Using the Bishop for an edge attack

Bishops are very powerful in this type of positions and in both sides they can help both in the attack and in the defense. Sometims they can support an edge attack.
De Schepper – Burg Liege 2016

In above position my opponent just dropped his Bishop, and possible ideas are P95 Px95 P*92 or P15 Px15 P*12. This is however a bit slow, and P74 with the idea of P75 would have been strong again here. However, I went for a similar plan with P54. I wanted to drop the Bishop on 53 which would have influence on both sides as well. After P66 P95 Px95 P*97 my opponent could not take because of the Rook-Lance fork B*53. After that I could easily break through on the 9th file and win the game.

A timely P*86 and dropping a pawn on the 2nd file

When Sente plays P*87 and the Rook goes back, there is an option to play P*86 at the right moment and reinitiate the battle on the 8th file. This can be especially effective when the side Pawn is unguarded, so P*86 Px86 Rx86 P*87 Rx76 could be possible.
Twaburov-Bluemurder 24 december 2017 81dojo


In this game we are in the same variation with reversed colours. In the opening I played a waiting move P16, and my opponent took the side Pawn. In the position above my opponent just played P74 I thought it is a good moment to play P*24, because the side Pawn is unguarded. It would have been even better to harass the opponent’s rook first with P*85. Dropping a pawn on this file can have a few advantages:

  • It reduces the impact of the Rook on this file and the opponent will have a hard time breaking through.
  • When attacking the opponent’s Rook, it has to choose whether it moves sideways or backwards, in either case it loses influence.
  • It can be used as a foothold for attack. For example, with a pawn on 86 in above position, I could consider bumping the rooks with R85. And with a pawn on 85, later I could drop a Knight on 84.

In this case, the Rook would have to give up defending the 74 pawn, and would not able to stay active along the 4th rank. Instead, after P*24 Px24 Rx24 P75 we reached the following position:

In this position I brought my Rook back to 25. Note that the move P*24 is then not really a threat. There are some effective ways to deal with it, for example Bx77 Nx77 N33 R88 P*22. But anyway the Rook is active on the 5th rank and has a nice influence on the second file.
After R25, Gote cannot play P76 because of BxB SxB B*66, so my opponent played the interesting pawn sacrifice P35. However, after Bx22+ Sx22 Rx35 the Gold is hanging on 32. I then took the pawn on 75 and fulfilled my claim of winning 2 pawns.

As I explained above, another way of using a pawn on the 2nd file is to offer a Rook exchange. After exchanging Rooks the game becomes typically wild very soon, so it is important to calculate it. Psychologically it might be difficult choice for the opponent, who might want a calmer game, and who might be worried about your calculations.
Okamura-Burg ESC 2016

In this position it was actually a good moment for P*86, but I noticed the possibility to offer a rook exchange. After R25 Rx25 Px25 I thought I might have a slight advantage, because it takes only 2 moves to make a strong Tokin on 27. However, he could use the Knight on 28 quickly for an attack. Therefore the best way for him was to accept the Rook exchange and then play as follows:
R25 Rx25 Px25 R*81 R*28 N37 P26 N45 BxB+ SxB P27+ B*46 R29 Nx53+. So it seems that Sente would still be quicker. However, my opponent didn’t trust the complications and blocked with P*26. So I achieved my goal and made his Rook passive. After P*26 R85 S68 I now decided that it was a good moment for P*86. I then collected the side Pawn and won due the unfortunate position of his Rook.

General considerations


This opening normally leads to very interesting positions, and there are much more ideas than the one that I have mentioned so far. Few things that I have seen a few times are:

  • An attack by both Knights in the centre, sacrificing them on 57 or 53 for one general and to weaken the position of the opponents king. Such an attack can also be supported by switching the Rook to the 5th
  • Successive pawn drops by Sente to force the Silver to a worse square: P*23 Sx23 P*24 S12. This Pawn can then be used as a foothold for the attack.

 

1st Shogi & Bossche Bollen in Den Bosch on 17 February 2018

18 november 2017
The dragon of Den Bosch

On the 17th of February 2018 a Shogi tournament is organized in Den Bosch in cooperation with the Dutch Shogi Federation. The tournament will count for FESA ratings.
There are 4 or 5 rounds, depending on the number of participants.
The time control is 30 minutes with 30 seconds byo-yomi.
After the first round there will be a small break to eat Bossche Bollen!
A Bossche Bol is a famous pastry from the city of Den Bosch.

Schedule
1000-1030 Registration and opening
1030-1130  Round 1
1130-1200  Bossche Bollen
1200-1330  Round 2
1330-1415   Lunch
1415-1545   Round 3
1545-1715   Round 4
1730-1800  Prize ceremony

Afterwards several participants may go for dinner in the medieval inner city of Den Bosch!

Arbitre: Tom Kau
Entry fee: 10 euro, including 2 consumptions and a Bossche Bol
Registrations: twanburg@gmail.com
Prizes: 1st place 25 euro. Cups for top 3 and best female player. 4 Book prizes at random for the remaining players.

The book prizes!

Location
Sociaal-Cultureel Centrum De Biechten, Vincent van Goghlaan 1, Rosmalen
There are plenty of parking places available. From Den Bosch central station it’s 4 kilometer, and it can be done with a bus in 15 minutes.
There are supermarkets and a snackbar available within 100 meters.

Participants

Name Nationality Rating
Suzaki, Atsushi JAP 2099
Burg, Twan NED 1991
Van der Lubbe, Lex NED 1774
Höhne, Ritchy NED 1641
Höhne, Michael NED 1507
Baldus, Julian GER 1420
Umudova, Nargiz AZE 1355
Kau, Tom NED 1234
Hessels, Willem NED 1087
Baumgarth, Michaela GER 1080
Kuivenhoven, Sam NED 900
Pizarro Silva, Loreto NED 830
Jung, Jasper NED 779
Haupt, Jennifer GER 688

Uitslag 1st The Hague Shogi & Fireworks

27 augustus 2017

Shogi and Fireworks, Scheveningen : 2017-08-19/20

Nr Name Nat Grade ELO 1 2 3 4 5 6 Pts +/-
1 Burg Twan NL 2 Dan 1962 13+ 6+ 10+ 8+ 2+ 4+ 6 +29
2 Suzaki Atsushi JP 2120* 9+ 3+ 8+ 4+ 1- 5+ 5
3 Höhne Ritchy NL 2 Kyu 1573 14+ 2- 22+ 7+ 9+ 10+ 5 +33
4 van der Lubbe Lex NL 1 Dan 1742 19+ 11+ 5+ 2- 10+ 1- 4 +10
5 Dardour Bilal DE 2 Kyu 1614 16+ 7+ 4- 11+ 14+ 2- 4 +6
6 Hageman Ger NL 2 Kyu 1568 22+ 1- 14+ 9- 11+ 8+ 4 +11
7 Sugou Yuuji JP 1453* 18+ 5- 16+ 3- 13+ 9+ 4
8 Hamila Fakhri TN 3 Kyu 1580 12+ 17+ 2- 1- 16+ 6- 3 -5
9 Baldus Julian DE 4 Kyu 1391 2- 12+ 23+ 6+ 3- 7- 3 +29
10 Faber Sébastien FR 2 Kyu 1580 23+ 15+ 1- 19+ 4- 3- 3 -6
11 Höhne Michael NL 4 Kyu 1404 21+ 4- 15+ 5- 6- 18+ 3 +7
12 Keitsch Marcel DE 7 Kyu 1062 8- 9- 17- 24+ 19+ 13+ 3 +26
13 Fujishige Tim JP 1011* 1- 14- 18+ 17+ 7- 12- 2
14 Baumgarth Michaela DE 8 Kyu 1002 3- 13+ 6- 20+ 5- 15- 2 +78
15 Umudova Nargiz NL 1399 17+ 10- 11- 16- 20- 14+ 2 -44
16 Grandmarre Antoine FR 7 Kyu 1100 5- 21+ 7- 15+ 8- 0- 2 +61
17 Jung Jasper NL 16 Kyu 558 15- 8- 12+ 13- 18- 21+ 2 +159
18 Haupt Jennifer DE 15 Kyu 611 7- 23- 13- 21+ 17+ 11- 2 +77
19 Hessels Willem NL 6 Kyu 1124 4- 22- 21+ 10- 12- 24+ 2 -37
20 Kau Tom NL 3 Kyu 1219 0+ 0- 0- 14- 15+ 0- 2 +15
21 Pizarro Silva Loreto NL 12 Kyu 703 11- 16- 19- 18- 24+ 17- 1 +10
22 Kuivenhoven Sam NL 12 Kyu 830 6- 19+ 3- 0- 0- 0- 1 +70
23 Verheij Mark NL 8 Kyu 1089 10- 18+ 9- 0- 0- 0- 1 +7
24 Zwitser Liam NL 12 Kyu 792 0- 0- 0- 12- 21- 19- 0 -17

Promoting Suzaki Atsushi to 2 Dan
Promoting Dardour Bilal to 1 Kyu
Promoting Hamila Fakhri to 2 Kyu
Promoting Baldus Julian to 3 Kyu
Promoting Höhne Michael to 3 Kyu
Promoting Umudova Nargiz to 5 Kyu
Promoting Jung Jasper to 14 Kyu
Promoting Haupt Jennifer to 13 Kyu
Promoting Kuivenhoven Sam to 10 Kyu
Promoting Zwitser Liam to 11 Kyu